package com.atguigu.gulimall.product.config;

import com.alibaba.fastjson.support.spring.GenericFastJsonRedisSerializer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
@EnableCaching
@EnableConfigurationProperties(CacheProperties.class)//配置文件生效
public class MyCacheConfig {

    /**
     * 从配置文件的指定配置类cacheProperties中获取配置信息
     */
    @Autowired
    private CacheProperties cacheProperties;

    /**
     * 配置文件中的东西没有用上
     *
     * 1、原来和配置文件绑定的配置类
     *      @ConfigurationProperties(prefix = "spring.cache")
     *      public class CacheProperties {
     *
     * 2、要让他生效
     *      @EnableConfigurationProperties(CacheProperties.class)//配置文件生效
     *
     *      从容器中拿
     *      @Autowired
     *      private CacheProperties cacheProperties;
     *
     *      或者写在参数中，springboot机制也会先从容器中拿
     *      RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties)
     * @return
     */
    @Bean
    RedisCacheConfiguration redisCacheConfiguration() {
//    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();

        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        //设置value的序列化器为GenericFastJsonRedisSerializer
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericFastJsonRedisSerializer()));

        //将配置文件中的所有配置都生效
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }

        return config;
    }
}
